6-145735370-G-C

Position:

chr6-145735370-G-C

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2BP4_StrongBP6BP7BS1

The NM_005670.4(EPM2A):c.129C>G(p.Ala43=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000251 in 1,250,822 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

EPM2A
NM_005670.4 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: -0.00100

Variant links:

Genes affected

EPM2A (HGNC:3413): (EPM2A glucan phosphatase, laforin) This gene encodes a dual-specificity phosphatase and may be involved in the regulation of glycogen metabolism. The protein acts on complex carbohydrates to prevent glycogen hyperphosphorylation, thus avoiding the formation of insoluble aggregates. Loss-of-function mutations in this gene have been associated with Lafora disease, a rare, adult-onset recessive neurodegenerative disease, which results in myoclonus epilepsy and usually results in death several years after the onset of symptoms. The disease is characterized by the accumulation of insoluble particles called Lafora bodies, which are derived from glycogen. [provided by RefSeq, Jan 2018]

EPM2A links:

EPM2A-DT (HGNC:):

EPM2A-DT links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.57).

BP6

Variant 6-145735370-G-C is Benign according to our data. Variant chr6-145735370-G-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 137223.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=1, Uncertain_significance=1}.

BP7

Synonymous conserved (PhyloP=-0.001 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00132 (197/149498) while in subpopulation AFR AF= 0.00446 (184/41230). AF 95% confidence interval is 0.00394. There are 0 homozygotes in gnomad4. There are 95 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EPM2A	NM_005670.4 linkuse as main transcript	c.129C>G	p.Ala43=	synonymous_variant	1/4	ENST00000367519.9	NP_005661.1
EPM2A-DT	NR_038246.1 linkuse as main transcript	n.52+450G>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EPM2A	ENST00000367519.9 linkuse as main transcript	c.129C>G	p.Ala43=	synonymous_variant	1/4	1	NM_005670.4	ENSP00000356489	P1	O95278-1

Frequencies

GnomAD3 genomes

AF:

0.00131

AC:

196

AN:

149400

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00445

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000399

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000896

Gnomad OTH

AF:

0.000485

GnomAD3 exomes

AF:

0.000176

AC:

AN:

11338

Hom.:

AF XY:

0.00

AC XY:

AN XY:

7226

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00152

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000106

AC:

117

AN:

1101324

Hom.:

Cov.:

AF XY:

0.000101

AC XY:

AN XY:

533180

show subpopulations

Gnomad4 AFR exome

AF:

0.00358

Gnomad4 AMR exome

AF:

0.000343

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000296

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000182

Gnomad4 OTH exome

AF:

0.000375

GnomAD4 genome

AF:

0.00132

AC:

197

AN:

149498

Hom.:

Cov.:

AF XY:

0.00130

AC XY:

AN XY:

72974

show subpopulations

Gnomad4 AFR

AF:

0.00446

Gnomad4 AMR

AF:

0.000399

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000896

Gnomad4 OTH

AF:

0.000481

Alfa

AF:

0.000693

Hom.:

Bravo

AF:

0.00126

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

May 15, 2018

- -

not specified

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Sep 24, 2013

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

May 02, 2016

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Progressive myoclonic epilepsy

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 21, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.57

CADD

Benign

5.3

DANN

Benign

0.32

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over